CN1143849A - High-low voltage capacitor complete compensator - Google Patents
High-low voltage capacitor complete compensator Download PDFInfo
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- CN1143849A CN1143849A CN 95115122 CN95115122A CN1143849A CN 1143849 A CN1143849 A CN 1143849A CN 95115122 CN95115122 CN 95115122 CN 95115122 A CN95115122 A CN 95115122A CN 1143849 A CN1143849 A CN 1143849A
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- Y02E40/30—Reactive power compensation
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Abstract
A reactive power compensating device used in electric power system is a complete set of high-voltage and low-voltage capacitors for automatic respective compensations. The capacity of high-voltage capacitors is average compensated one. The peak reactive power is compensated in common by high-voltage capacitors and low-voltage capacitors after reducing voltage by transformer. The valley reactive power is compensated in common by low-voltage reactors and high-voltage capacitors. Its advantages include staged automatic regulation of capacitance capacity, improvement on power factor and voltage quality, high response speed and low cost.
Description
The present invention relates to a kind of reactive power compensation device of electric power system, particularly high-low voltage capacitor complete compensator.
The Electric capacity compensation device of current application adopts the capacitance of Regulatable reactor adjustment compensation mostly in a certain voltage level compensation; The capacity of reactor is big, and the response speed of adjusting capacitance is slow, and the needs of incompatibility load variations speed are invested also bigger.
The purpose of this invention is to provide the technological means that a kind of high undervoltage level compensates simultaneously, reduce the total capacity of equipment, reach the purpose of rapid adjustment power factor, adjustment line voltage level.
The object of the present invention is achieved like this, describes in detail below in conjunction with accompanying drawing:
Fig. 1 is the main junction of high-low voltage capacitor complete compensator, it is characterized in that: the measurement control assembly (Cy or Cf) by high-voltage capacitor combination (Cg), reactance transformer (T), secondary capacitor combination (Cd) and power supply or load is formed;
High-pressure side capacitor bank (Cg) is by one group of high-pressure capacitance compensation device (Kg1, Cg1, Lg1) or organize high-pressure capacitance compensation device (Kgn, Cgn, Lgn) parallel connection more, connects high voltage bus (Mg) respectively;
Reactance transformer (T) is made up of iron core (Tx), high-tension coil (Xg), low-voltage coil (Xd) and reactance coil (Xk); Reactance coil (Xk) is through circuit breaker (DL3), low tension switch (K01～K0n) and load reactance device (L01～L0n) connect; High-tension coil (Xg) connects with high voltage bus (Mg) through circuit breaker (DL2), and low-voltage coil (Xd) connects with low-voltage bus bar (Md) through circuit breaker (DL4);
Low-voltage side capacitor combination (Cd) is by one group of low-voltage capacitance compensating device (Kd1, Cd1, Ld1) or organize low-voltage capacitance compensating device (Kdn, Cdn, Ldn) parallel connection more, is connected to low-voltage bus bar (Md) respectively; Through low tension switch (K00) resistor (R00) can be set at low-voltage bus bar (Md) as required;
The measurement control assembly of power supply or load (Cy or Cf) is that the power factor (or power, voltage) of power supply or load is measured control assembly, can be that numeric type also can be a mould value type;
The high-pressure side is meant that comprising that 66KV and following voltage, low-pressure side are meant comprises 35kV and following voltage.
The high coil (Xg) of reactance transformer (T) and low-voltage coil (Xd) are formed the transformer of a little short-circuit impedance, through low tension switch (Kd1～Kdn) link with the secondary capacitor combination; High-tension coil (Xg) and reactance coil (Xk) are formed the transformer of a big short-circuit impedance, through low tension switch (K01～K0n) and reactor (L01～L0n) link;
Reactance transformer can be that core formula structure also can be the shell-type structure.
The low-voltage side capacitor combination (Cd) of high-low voltage capacitor complete compensator shown in Figure 2, capacitor (Cd0) is a group capacitor, or the capacitor group of a plurality of monolithic capacitor connection in series-parallel composition, can draw tap at 1/2nd magnitude of voltage places of capacitor;
The low tension reactor (Ld0) of connecting with secondary capacitor (Cd0) is air-core reactor or iron core reactor;
The primary winding of discharge coil (Fd0) is in parallel with secondary capacitor (Cd0), and discharge coil (Fd0) secondary coil connects voltage difference measuring component (Ycd0), connects discharge resistance (Rd0) through discharge switch (Jd0);
The low-voltage coil (Xd) of reactance transformer (T) has a plurality of taps, respectively with low tension switch (Kd1～Kdn) connect, (folding of Kd1～Kdn) is by measuring control assembly (Cy or Cf) control for low tension switch;
The folding of discharge switch (Jd0) is by low tension switch (Kd1～Kdn) control.
Discharge switch (Jd0) and low tension switch (Kd1～Kdn), can be dielectric switch, vacuum switch, high voltage connector, contactless electronic power switch and on-load voltage regulating switch.
Shown in Figure 3 is that reactance transformer (T) directly is connected to system busbar (Mx) through circuit breaker (DL2), and the high-pressure side of high-low voltage capacitor complete compensator and low-pressure side operation are not disturbed mutually.
(Cg1～Cgn, Cd1～Cdn) are into group capacitor to capacitor shown in Figure 4, or the capacitor group formed of a plurality of monolithic capacitor connection in series-parallel, can draw tap at 1/2nd magnitude of voltage places of capacitor;
With capacitor (Cg1～Cgn, the reactor of the series connection of Cd1～Cdn) (Lg1～Lgn, Ld1～Ldn) is air-core reactor or iron core reactor; The ratio of the induction reactance of reactor and the capacitive reactance of capacitor, the resonance value of closing on certain subharmonic, the combination of electric capacity and reactance is capacitive to first-harmonic, and harmonic wave is perception; Every group of capacity reactance close on harmonic value, can be inequality;
Discharge coil (Fg1～Fgn, primary winding and the capacitor (Cg1～Cgn of Fd1～Fdn), Cd1～Cdn) parallel connection, discharge coil (Fg1～Fgn, Fd1～Fdn) secondary coil meets voltage difference measuring component (Ycg1～Ycgn, (Jg1～Jgn, Jd1～Jdn) meet discharge resistance (Rg1～Rgn, Rd1～Rdn) through discharge switch for Ycd1～Ycdn);
High-voltage switch gear (Kg1～Kgn), (folding of Kd1～Kdn) is by measuring control assembly (Cy or Cf) control, and cooperates with circuit breaker (DL1) or circuit breaker (DL4) for low tension switch;
Discharge switch (Jg1～Jgn, the folding of Jd1～Jdn) is by high-voltage switch gear (Kg1～Kgn), low tension switch (Kd1～Kdn) control;
High-voltage switch gear (Kg1～Kgn), low tension switch (Kd1～Kdn, K00) and discharge switch (Jg1～Jgn, Jd1～Jdn) can be dielectric switch, vacuum switch, high voltage connector and contactless electronic power switch;
High-low voltage capacitor complete compensator of the present invention can be used for single-phase, two-phase, three-phase and polyphase system.
The measurement control assembly of high-low voltage capacitor complete compensator shown in Figure 5 (Cy or Cf), measure total current (I), full voltage (U) and time (Ti) or full voltage (Up) and time (Ti) element, send into average power factor (cos Φ) or average voltage (Up) computing element simultaneously, behind serial setting comparing element (B):
When average power factor (cos Φ) or average voltage (Up) less than whole settings:
Average power factor (cos Φ) or average voltage (Up) amplify through control command less than setting 1, and circuit breaker (DL4) is opened, low tension switch (Kd1) closure, and circuit breaker (DL4) closure, low-voltage side capacitor group 1 (Cd1, Ld1) drops into;
Average power factor (cos Φ) or average voltage (Up) are less than setting 2, and through above-mentioned similar procedure, low-voltage side capacitor group 1 (Cd1, Ld1) drops into low-voltage side capacitor group 2 (Cd2, Ld2);
Drop into up to whole low-voltage side capacitor group n (Cdn, Ldn);
When average power factor (cos Φ) or average voltage (Up) greater than whole settings:
Average power factor (cos Φ) or average voltage (Up) amplify through control command greater than setting 1, and circuit breaker (DL4) is opened, and low tension switch (Kd1) is opened, circuit breaker (DL4) closure, low-voltage side capacitor group 1 (Cd1, Ld1) excision;
Average power factor (cos Φ) or average voltage (Up) are greater than setting 2, and through above-mentioned similar procedure, low-voltage side capacitor group 2 (Cd1, Ld1) is excised with low-voltage side capacitor group 2 (Cd2, Ld2);
Excise up to whole low-voltage side capacitor group n (Cdn, Ldn);
Average power factor (cos Φ) or average voltage (Up) amplify through control command still greater than certain setting m, and circuit breaker (DL3) is opened, low tension switch (K01) closure, and circuit breaker (DL3) closure, low-pressure side reactor group 1 (L01) drops into;
Average power factor (cos Φ) or average voltage (Up) are still greater than certain setting m+1, and through above-mentioned similar procedure, low-pressure side reactor group 1 (L01) drops into low-pressure side reactor group 2 (L02);
Drop into up to whole low-pressure side reactor group n (L0n);
Each components and parts can be relay element, discrete electronic component, also can be the integrated electric sub-element.
High-low voltage capacitor complete compensator of the present invention, both can become as a whole and drop into excision by a circuit breaker (DL1), also can be and (DL2) divide high-voltage capacitor combination and reactance transformer to add the secondary capacitor combination by two circuit breakers (DL1), drop into respectively or excision.
The pro rate of the capacity of high-low voltage capacitor complete compensator high-voltage capacitor and the capacity of secondary capacitor is determined according to different customer requirements.
Symbol description in the accompanying drawing 1: Cg-high-voltage capacitor combination; The T-reactance transformer; The combination of Cd-secondary capacitor; Cy, Cf-power supply, the measurement control assembly of load; High-voltage switch gear, capacitor, the reactor of Kg1, Cg1, first group of high-voltage capacitor of Lg1-; High-voltage switch gear, capacitor, the reactor of Kg2, Cg2, second group of high-voltage capacitor of Lg2-; High-voltage switch gear, capacitor, the reactor of Kgn, Cgn, Lgn-n group high-voltage capacitor; The Mg-high voltage bus; The Md-low-voltage bus bar; The Mx-system busbar; Tx, Xg, Kd, the iron core of Xk-reactance transformer, high-tension coil, low-voltage coil, reactance coil; DL1, DL2, DL3, DL4-circuit breaker 1, circuit breaker 2, circuit breaker 3, circuit breaker 4; K01～K0n, the L01～low tension switch of L0n-reactance transformer reactance coil, load reactance device; Low tension switch, capacitor, the reactor of Kd1, Cd1, first group of secondary capacitor of Ld1-; Low tension switch, capacitor, the reactor of Kd2, Cd2, second group of secondary capacitor of Ld2-; Low tension switch, capacitor, the reactor of Kdn, Cdn, Ldn-n group secondary capacitor; K00, R00-are connected to low tension switch, the resistor of low-voltage bus bar (Md);
Symbol description in the accompanying drawing 2: Cd0-one group capacitor; The low tension reactor of Ld0-series connection; The Fd0-discharge coil; Ycd0-voltage difference measuring component; The Jd0-discharge switch; The Rd0-discharge resistance; Kd1～many taps of Kdn-reactance transformer low-voltage coil low tension switch; All the other are with symbol description in the accompanying drawing 1;
The discharge coil of symbol description in the accompanying drawing 4: Fg1～Fgn-high-voltage capacitor; The discharge coil of Fd1～Fdn-secondary capacitor; The voltage difference measuring component of Ycg1～Ycgn-high-voltage capacitor; The voltage difference measuring component of Ycd1～Ycdn-secondary capacitor; The discharge switch of Jg1～Jgn-high-voltage capacitor; The discharge switch of Jd1～Jdn-secondary capacitor; The discharge resistance of Rg1～Rgn-high-voltage capacitor; The discharge resistance of Rd1～Rdn-secondary capacitor; All the other are with symbol description in the accompanying drawing 1,2;
The measurement control assembly of symbol description in the accompanying drawing 5: Cy, Cf-power supply, load; I, U, Ti-total current, full voltage and the measuring component of time; Up, cos Φ-average voltage, average power factor computing element; B-series setting comparing element; All the other are with symbol description in the accompanying drawing 1,2,4;
For example: certain requirement of engineering building-out capacitor amount is Qc, transformer capacity St, and reactor capacity Q1 adjusts inductance and adjusts the building-out capacitor amount, and three's capacity equates (volt-ampere and weary number) and is 1 that total capacity is 3.
Adopt high-low voltage capacitor complete compensator of the present invention, the capacity of high-voltage capacitor is the capacity Qc/2 of Qc/2 and secondary capacitor, the capacity of transformer is St/2, capacity 0.15 Q1 of reactor, total capacity is 1.65, adopt the mode of adjusting the capacitive branch number to adjust capacitance, than transferring sensing mode to lack 1.35.With transferring the mechanical drive mode of feeling to change the switching mode of contactor or electronic power switch into, improved response speed greatly, in time compensating power and net voltage levels; Also reduced simultaneously cost.
High-low voltage capacitor complete compensator of the present invention can be widely used in the electric power system of various voltage levels, is a kind of product of saving the energy.
High-low voltage capacitor complete compensator of the present invention is particularly useful for doing the capacitance compensation of electric railway, both can be located at traction substation and also can be located at the subregion booth, also can high-voltage capacitor combination (Cg) be located at traction substation bus (Mg), reactance transformer (T) is located at subregion booth bus (Mg), and low-voltage bus bar (Md) is located in secondary capacitor combination (Cd).Not only can compensating power but also can improve the voltage of traction net.The cover Electric capacity compensation device is waited for transformation surplus in the of operating 300 at present.
High-low voltage capacitor complete compensator of the present invention can be widely used in the reactive power compensation and the voltage adjustment of various voltage level transformer station, in 35kv or 10kv level installing high-voltage capacitor combination (Cg), at reactance transformer (T) secondary installing low-voltage capacitor bank (Cd), carry out adjusting of reactive power with combining.Such transformer station whole nation has several thousand.
High-low voltage capacitor complete compensator of the present invention is particularly useful for making steel, the transformation station of steel rolling, and load occasion jumpy, secondary capacitor applied in any combination electronic power switch can satisfy the needs of any load variations, steel-making, the steel rolling equipment of size hundreds of cover are used high-low voltage capacitor complete compensator of the present invention, not only the quality of power supply can be improved, considerable economic can also be obtained.
High-low voltage capacitor complete compensator of the present invention can reduce energy loss to the system of State Grid, improves the quality of power supply, improves generating equipment efficient, alleviates the electric energy imbalance between supply and demand; Can improve the worker to electricity consumption enterprise and lead factor, lack and impose a fine or do not impose a fine, stablize line voltage, guarantee to produce and normally carry out; Can there be serial complete sets of products supply the market in production plant to high-low voltage capacitor complete compensator, with the total output value of hundred million yuan of calculating;
High-low voltage capacitor complete compensator of the present invention is a kind of energy-conserving product that has actual effect for a long time.
Claims (5)
1. a kind of Electric capacity compensation device of forming by known switch, capacitor, reactor, high-low voltage capacitor complete compensator particularly is characterized in that: the measurement control assembly (Cy or Cf) by high-voltage capacitor combination (Cg), reactance transformer (T), secondary capacitor combination (Cd) and power supply (or load) is formed;
High-pressure side capacitor bank (Cg) is by one group of high-pressure capacitance compensation device (Kg1, Cg1, Lg1) or organize high-pressure capacitance compensation device (Kgn, Cgn, Lgn) parallel connection more, connects high voltage bus (Mg) respectively;
Reactance transformer (T) is made up of iron core (Tx), high-tension coil (Xg), low-voltage coil (Xd) and reactance coil (Xk); Reactance coil (Xk) is through circuit breaker (DL3), switch (K01～K0n) and load reactance device (L01～L0n) connect; High-tension coil (Xg) connects with high voltage bus (Mg) through circuit breaker (DL2), and low-voltage coil (Xd) connects with low-voltage bus bar (Md) through circuit breaker (DL4);
Low-voltage side capacitor combination (Cd) is by one group of low-voltage capacitance compensating device (Kd1, Cd1, Ld1) or organize low-voltage capacitance compensating device (Kdn, Cdn, Ldn) parallel connection more, is connected to low-voltage bus bar (Md) respectively; Through low tension switch (K00) resistor (R00) can be set at low-voltage bus bar (Md) as required;
The measurement control assembly of power supply or load (Cy or Cf) is the power factor of power supply or load or power, voltage measurement control assembly, can be that numeric type also can be a mould value type;
(Cg1～Cgn, Cd1～Cdn) are into group capacitor to capacitor, or the capacitor group formed of a plurality of monolithic capacitor connection in series-parallel, can draw tap at 1/2nd magnitude of voltage places of capacitor;
With capacitor (Cg1～Cgn, the reactor of the series connection of Cd1～Cdn) (Lg1～Lgn, Ld1～Ldn) is air-core reactor or iron core reactor; The ratio of the induction reactance of reactor and the capacitive reactance of capacitor, the resonance value of closing on certain subharmonic, the combination of electric capacity and reactance is capacitive to first-harmonic, and harmonic wave is perception; Every group of capacity reactance close on harmonic value, can be inequality;
Discharge coil (Fg1～Fgn, primary winding and the capacitor (Cg1～Cgn of Fd1～Fdn), Cd1～Cdn) parallel connection, discharge coil (Fg1～Fgn, the secondary coil of Fd1～Fdn) connect the voltage difference measuring component (Ycg1～Ycgn, Ycd1～Ycdn) is through discharge switch (Jg1～Jgn, Jd1～Jdn) meets discharge resistance (Rg1～Rgn, Rd1～Rdn);
High-voltage switch gear (Kg1～Kgn), low tension switch (Kd1～Kdn, folding K00) is controlled by measuring control assembly (Cy or Cf), and cooperates with circuit breaker (DL1, DL4);
Discharge switch (Jg1～Jgn, the folding of Jd1～Jdn) is by high-voltage switch gear (Kg1～Kgn), low tension switch (Kd1～Kdn) control;
High-voltage switch gear (Kg1～Kgn), low tension switch (Kd1～Kdn, K00) and discharge switch (Jg1～Jgn, Jd1～Jdn) can be dielectric switch, vacuum switch, high voltage connector and contactless electronic power switch;
Can be used for single-phase, two-phase, three-phase and polyphase system.
2. by the reactance transformer (T) of the described high-low voltage capacitor complete compensator of claim 1, it is characterized in that: forms the transformer of a little short-circuit impedance by high coil (Xg) and low-voltage coil (Xd), (Kd1～Kdn) makes up with secondary capacitor and links through circuit breaker (DL4), low tension switch; High-tension coil (Xg) and reactance coil (Xk) are formed the transformer of a big short-circuit impedance, through circuit breaker (DL3), low tension switch (K01～K0n) and reactor (L01～L0n) link; Through low tension switch (K00) switching resistor (R00);
Reactance transformer can be that core formula structure also can be the shell-type structure.
3. the low-voltage side capacitor by the described high-low voltage capacitor complete compensator of claim 1 makes up (Cd), it is characterized in that: capacitor (Cd0) is a group capacitor, or the capacitor group of a plurality of monolithic capacitor connection in series-parallel compositions, can draw tap at 1/2nd magnitude of voltage places of capacitor;
The low tension reactor (Ld0) of connecting with secondary capacitor (Cd0) is air-core reactor or iron core reactor;
The primary winding of discharge coil (Fd0) is in parallel with secondary capacitor (Cd0), and discharge coil (Fd0) secondary coil connects voltage difference measuring component (Ycd0), connects discharge resistance (Rd0) through discharge switch (Jd0);
The low-voltage coil (Xd) of reactance transformer (T) has a plurality of taps, respectively with low tension switch (Kd1～Kdn) connect, (folding of Kd1～Kdn) is by measuring control assembly (Cy or Cf) control for low tension switch;
The folding of discharge switch (Jd0) is by low tension switch (Kd1～Kdn) control.
Discharge switch (Jd0) and low tension switch (Kd1～Kdn), can be dielectric switch, vacuum switch, high voltage connector and contactless electronic power switch.
4. by the measurement control assembly (Cy or Cf) of the described high-low voltage capacitor complete compensator of claim 1, it is characterized in that: measuring component total current (I), full voltage (U) and time (Ti) or average voltage (Up) and time (Ti) are sent into average power factor (cos Φ) or average voltage (Up) computing element simultaneously, behind serial setting comparing element (B):
When average power factor (cos Φ) or average voltage (Up) less than whole settings:
Average power factor (cos Φ) or average voltage (Up) amplify through control command less than setting 1, and circuit breaker (DL4) is opened, switch (Kd1) closure, and circuit breaker (DL4) closure, low-voltage side capacitor group 1 (Cd1, Ld1) drops into;
Average power factor (cos Φ) or average voltage (Up) are less than setting 2, and through above-mentioned similar procedure, low-voltage side capacitor group 1 (Cd1, Ld1) drops into low-voltage side capacitor group 2 (Cd2, Ld2);
Drop into up to whole low-voltage side capacitor group n (Cdn, Ldn);
When average power factor (cos Φ) or average voltage (Up) greater than whole settings:
Average power factor (cos Φ) or average voltage (Up) amplify through control command greater than setting 1, and circuit breaker (DL4) is opened, and switch (Kd1) is opened, circuit breaker (DL4) closure, low-voltage side capacitor group 1 (Cd1, Ld1) excision;
Average power factor (cos Φ) or average voltage (Up) are greater than setting 2, and through above-mentioned similar procedure, low-voltage side capacitor group 1 (Cd1, Ld1) is excised with low-voltage side capacitor group 2 (Cd2, Ld2);
Excise up to whole low-voltage side capacitor group n (Cdn, Ldn);
Average power factor (cos Φ) or average voltage (Up) amplify through control command still greater than certain setting m, and circuit breaker (DL3) is opened, switch (K01) closure, and circuit breaker (DL3) closure, low-pressure side reactor group 1 (L01) drops into;
Average power factor (cos Φ) or average voltage (Up) are still greater than certain setting m+1, and through above-mentioned similar procedure, low-pressure side reactor group 1 (L01) drops into low-pressure side reactor group 2 (L02);
Drop into up to whole low-pressure side reactor group n (L0n);
Each components and parts can be relay element, discrete electronic component, also can be integrated electronics.
5. by claim 1,2,3,4 described high-low voltage capacitor complete compensators, it is characterized in that: both can become as a whole and drop into excision by a circuit breaker (DL1), also can be and (DL2) divide high-voltage capacitor combination and reactance transformer to add the secondary capacitor combination by two circuit breakers (DL1), drop into respectively or excision; Both can be installed in same place, also can divide the different location installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95115122A CN1055573C (en) | 1995-08-18 | 1995-08-18 | High-low voltage capacitor complete compensator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95115122A CN1055573C (en) | 1995-08-18 | 1995-08-18 | High-low voltage capacitor complete compensator |
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| CN1143849A true CN1143849A (en) | 1997-02-26 |
| CN1055573C CN1055573C (en) | 2000-08-16 |
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| CN95115122A Expired - Fee Related CN1055573C (en) | 1995-08-18 | 1995-08-18 | High-low voltage capacitor complete compensator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590781A (en) * | 2012-03-03 | 2012-07-18 | 江西省电力科学研究院 | Method for constructing secondary load of universal stepless self-adjusting current mutual inductor |
| CN102680861A (en) * | 2011-03-15 | 2012-09-19 | 沈阳变压器研究院股份有限公司 | System and method for testing short circuit withstanding capability of transformer or electric reactor |
| CN103441515A (en) * | 2013-09-17 | 2013-12-11 | 东南大学 | Reactive power compensation device |
| CN106208096A (en) * | 2016-07-21 | 2016-12-07 | 国网河北省电力公司电力科学研究院 | A kind of Substation Reactive-power Compensation grading method |
| CN107985338A (en) * | 2017-11-14 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | A kind of device of adapter, suppression track circuit harmonic wave |
| CN108075618A (en) * | 2017-11-14 | 2018-05-25 | 北京全路通信信号研究设计院集团有限公司 | A kind of device of adapter, inhibition track circuit harmonic wave |
| CN109633323A (en) * | 2018-12-24 | 2019-04-16 | 杭州银湖电气设备有限公司 | A kind of REgulatable reactor load test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2513168C3 (en) * | 1975-03-25 | 1978-06-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for reactive power compensation in a three-phase network |
| CN1022786C (en) * | 1992-05-25 | 1993-11-17 | 天津市荣发科技开发公司 | Self-adapting compensating-in-place method and apparatus thereof |
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1995
- 1995-08-18 CN CN95115122A patent/CN1055573C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102680861A (en) * | 2011-03-15 | 2012-09-19 | 沈阳变压器研究院股份有限公司 | System and method for testing short circuit withstanding capability of transformer or electric reactor |
| CN102680861B (en) * | 2011-03-15 | 2015-01-21 | 沈阳变压器研究院股份有限公司 | System and method for testing short circuit withstanding capability of transformer or electric reactor |
| CN102590781A (en) * | 2012-03-03 | 2012-07-18 | 江西省电力科学研究院 | Method for constructing secondary load of universal stepless self-adjusting current mutual inductor |
| CN103441515A (en) * | 2013-09-17 | 2013-12-11 | 东南大学 | Reactive power compensation device |
| CN106208096A (en) * | 2016-07-21 | 2016-12-07 | 国网河北省电力公司电力科学研究院 | A kind of Substation Reactive-power Compensation grading method |
| CN106208096B (en) * | 2016-07-21 | 2018-09-21 | 国网河北省电力公司电力科学研究院 | A kind of Substation Reactive-power Compensation grading method |
| CN107985338A (en) * | 2017-11-14 | 2018-05-04 | 北京全路通信信号研究设计院集团有限公司 | A kind of device of adapter, suppression track circuit harmonic wave |
| CN108075618A (en) * | 2017-11-14 | 2018-05-25 | 北京全路通信信号研究设计院集团有限公司 | A kind of device of adapter, inhibition track circuit harmonic wave |
| CN107985338B (en) * | 2017-11-14 | 2020-10-23 | 北京全路通信信号研究设计院集团有限公司 | Adapter, device for suppressing track circuit harmonic |
| CN108075618B (en) * | 2017-11-14 | 2020-10-23 | 北京全路通信信号研究设计院集团有限公司 | Adapter, device for suppressing track circuit harmonic |
| CN109633323A (en) * | 2018-12-24 | 2019-04-16 | 杭州银湖电气设备有限公司 | A kind of REgulatable reactor load test system |
| CN109633323B (en) * | 2018-12-24 | 2021-03-26 | 杭州银湖电气设备有限公司 | Adjustable reactor load test system |
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| CN1055573C (en) | 2000-08-16 |
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